Trays
Pegboard Tray
This pegboard tray is parameterized. If you change the dimensions in the OpenSCAD file, it will automatically generate the correct mounting pegs. You can tweak other attributes such as peg diamter, though the default should work with most pegboard.
I’ve also generated STL files for some common tray sizes.
Pegboard Tray 2x2x2
Pegboard Tray 3x3x2
Pegboard Tray 4x4x2
Pegboard Tray 4x4x3
Pegboard Tray 4x5x2
Pegboard Tray 4x6x2
Pegboard Tray 6x4x2
Pegboard Tray 7x4x2
Magazine holders
AR-15 PMAG
Glock 17/19/26
Ruger Mk III
I’m pretty sure this works with magazines for all versions of the Ruger Standard.
Sig P239
This will also hold magazines for the Sig P225-A1.